Improvement in vises



, pose.

PATENT OFFICE.

JOHN w. OOYNE, or MADRID, NEW YORK.

IMPROVEMENT IN VISES.

Specification forming part of Letters Patent No. 119,327, datedSeptember 26, 1871.

To all whom it may concern:

Be it known that 1, JOHN W. OoYNn, of Madrid, in the county of St.Lawrence and State of New York, have invented a new Improved Vise.

My invention consists, primarily, in an improved self-adjustingappliance at the lower part of the vise, by which the parallelism of thejaws is preserved at any distance asunder. It further consists inadapting the jaws thus provided with means for preserving parallelism toreceive interchangeable face-plates for holding objects of diiferentshapes, as hereinafter set forth.

Figure 1 is a side elevation of a vise illustrating my improvement. Fig.2 is a section thereof at w m, Fig. 1. Fig. 3 is a perspective view ofthe upper part of the jaws, illustrating the mode of holding awedge-shaped object. Fig. 4 is a perspective view, illustrating the modeof holding an annular body. Fig. 5 is a perspective view of one form ofthe removable face-plate. Fig. 6 is a perspective view of the face-platesocket. Fig. 7 is anelevation of the upper part of the jaws, showing theapplication of a removable face-plate tapered vertically.

A is the stationary jaw of the vise and B the movable jaw thereof, whichis retracted from or pressed toward the former by means of a screw, 0,operated by a lever-rod, D, in the customary manner. To the upper partof one of the jaws is applied a socket, E, shown in Fig. 6, formed andadapted to receive face-plates F F 1?", any number of which may be made,in various shapes, to adapt them for any desired pur- The face-plate F,represented in Fig. 5, is parallel front and back,to adapt it to graspobjects with parallel sides. The face-plate F Fig. 3, is beveled atback, so that, as its dovetailed rib f fits within the socket E, it mayvibrate or rock therein, and thus automatically assume any requiredposition to firmly grasp a tapering object, such as is indicated by thedotted outline in Fig. 3, to hold the same in horizontal positions. Theface-plate F is formed at back to fit immovably against the jaw A, buthas a concave or convex face to correspond with the concave or convexface of va removable plate, G, which is applied to the other jaw B, andmay be held thereto by dovetailed flanges g fitting upon the edges ofthe said jaw, as represented. The faces of the plates F and G will thusbe understood to be parallel and form an arc, adapting them to tightlygrasp an annular object, such as is indicated by the dotted line in Fig.4. Employed separately, they will hold objects with one side concave orconvex. F Fig. 1, may represent a removable face-plate expanding inthickness upwardly, and F Fig. 7 a similar face-plate tapering upwardly.These plates are thus adapted to hold objects having a vertical taperwith either end up, as may be most convenient. The

mode of applying and securing the removable face-plate enables me toexchange one for an sition illustrated by the dotted lines, the point hI will slip freely over the backs of the teeth i,- but the instant thereverse action of the screw causes the upper end of the jaws to grasp anobject placed between them, and restore the jaw B to the positionshown'by the full lines, the point It will be arrested by the firstteeth i with which it comes in contact. The inward motion of the leverend of the jaw B is thus arrested, and the parallelism of the jawspreserved while they are at any distance asunder.

I claim as my invention- The combination, with the jaws A B and theirscrew 0, of the improved self-adjusting device for preservingparallelism, composed of the rigid arm or pawl H projecting inward fromthe movable jaw, and the stationary rack I for the engagement of saidpawl, arranged and operating as shown and described, with or without thedescribed adaptation of the upper ends of the jaws to receiveinterchangeable face'plates F F F F F G for holding objects of differentshapes.

JOHN W. OOYNE.

Witnesses:

Gno. G. SIMONs,

E. c. WALSH. 21

